北京某医院新冠肺炎应急工程暖通设计

HVAC Design of COVID-19 Emergency Hospital Project of Beijing

通过对北京某医院新冠肺炎应急临时医疗工程设计工作的技术总结,阐述了此类病房的设计思路和设计方法。病房功能分区采用"三区两通道"的设计理念,空调通风系统严格按照功能分区独立设置,通过各分区送排风参数的确定、气流组织的设计、空气净化措施及自动控制方式,保证医院内从清洁区至半污染区至污染区形成由高至低的压力梯度及定向空气流,隔断污染区空气进入清洁区。通过理论计算分析了压力梯度及门缝宽度对负压病房排风量的影响,可作为工程设计参考。此外,总结了负压病房设置缓冲室的隔离效果,提出了系统自控方法。

The paper presented the design ideas and methods of the COVID-19 emergency treatment building for a certain hospital in Beijing. The concept of "three zones with two corridors" was adopted for the layout functional zones. The air conditioning and ventilation systems are independently designed for each zone. In order to prevent the airflow from the contamination zone to the cleaning zone, forming pressure gradient and unidirectional airflow from the cleaning zone to the partial cleaning zone and finally to the contamination zone is needed. Accordingly, the selection of the ward parameters, air distribution, air purification and the automatic control requirements needs to be determined for each zone. For assessing the effect of the pressure gradient and the door gap width on the negative pressure ward ventilation rate, and the result can be used as a design reference. In addition, the isolation effect of buffer room for the negative pressure ward was summarized, and the system automatic control method was proposed.